C1NavigationListButtonItem is a simple list item that can be used as a button. It can be nested within a C1NavigationListGroupItem, or it can be used as a standalone item. The image below illustrates a list button:
You can add a list button through the Edit NavigationList dialog box, or you can add it through Source view using the following XHTML markup:
<cc1:C1NavigationList runat="server" NavigationListType="RoundedCornersList" Text="Settings"
OnClientItemChecked="ItemChecked" OnClientItemClick="ItemClicked">
<Items>
<cc1:C1NavigationListButtonItem runat="server" Text="Button">
</cc1:C1NavigationListButtonItem>
</Items>
</cc1:C1NavigationList>